X-ray apparatus



vA. S. KALENBORN X-RAY APPARATUS Original Fil ed March 9 BYCZAJ July 21,1925.

Patented July 21, 1925.

Aaron s. xAL-ni'monm'ojr snnrnsncrseo, came-came.

X-RAY AEPARATUS.

Application fil M rs 1 fgriel "N 4. Qi Q3s hee wee Ma -11 4 to producecontrol and givev direction to higher series-X-reiys of shorterwavelength.

and higher frequency, and other rays, such as those of the gammaseries,without current losses or dangers which might arise due to leakage andsparking.

The present invention contemplates the use of a transformer andrectifier for producing unidirectional high potential electric currentswhich are delivered to an X- ray tube, said apparatus being used inconnection with a filament transformer when required, all of whichapparatus is electrically connected and is enclosed within an oil filledtank, being thereby oil cooled and insulated. i

The invention isxillustrated by way of example in the accompanyingdrawing, in which:

Fig. 1 is a view in perspective showing the present invention.

Fig. 2 is an enlarged fragmentary view of the tube adjustment.

Fig. 3 is a view in diagram showing the arrangement of parts of theapparatus.

Referring more particularly to the drawings, 10 indicates a tankpreferably formed of metal. This tank is lead lined and has a window 11in the walls thereof formed of material transparent to X-rays. Thiswindow is so formed as to permit the patient to be disposed in front orabove the tank. Disposed in the rear of this window is an X- ray tube12. When this tube is of the Coolidge filament type a filamenttransformer 13 is connected therewith, and this transformer is enclosedwithin the tank. The tank contains a transformer 14 which is designed tostep up the potential of a current from any initial 19?) Wl ge to adesired higher voltage, as for example, from 220 volts to 200,000 volts.

The transformer is constructed with sec tional windings of the. enerelarrangement disclosed in the Patent o. 1,1 95,733, ,granted --Fr hk Bihe A 1 s 2, 6- The s con ry ind g ie s r nsf r r are electricallyconnected with contact members of a meehanical rectifie'ri15. Therectifier is preferably. of the type dis'closed in my co- ,pendingplication, filed December 15,

1920, and earing the Serial 431,021.

All of this apparatus 'is submerged-in oil tank. and provided atits'inner end with a worm which meshes with a, gear carried'by theX-raytube. By rotatingthe shaft t' he sea-r "an y iti b r r t ally r t etodi'rect" the rays through a selected portion of the window which issubstantially concentric with the X-ray tube. The shaft is provided nearits outer end with a finger which is movable over graduations forindicating the position of the X-ray tube with relation to the window.

In operation of the apparatus, low voltage current is delivered to theprimary windings of the transformer 14 The secondary currents producedin the sectionalized secondary windings of the transformer are deliveredto the rectifier, where high potential alternating current will beconverted to form unidirectional electric currents, which are thendelivered to the X-ray tube. In the event that a filament transformer isrequired, this is electrically connected to perform its necessaryfunction in connection with the tube. The difliculty experienced inhandling high voltage in connection with X-ray work is well known, andby forming the oil filled tank 10 of metal lead lined and well grounded, the danger incident to the production of X-rays and high potentialcurrents will be substantially eliminated. This danger will be furtherdecreased due to the fact that the X-ray apparatus will be submerged inoil, and the rays of the gamma series will be emitted through the window11.

"what I claimand desire to secure by Letters Patent is:

1. An electrical apparatus comprising a closed container having awindow, a dielectrio medium filling .said container, an X- ray tubeentirely submerged within said medium, a transformer, andia rectifieralso submerged within said medium, said trans-' former and rectifierbeing connected with the X-ray tube and operating means remote from theX-ray tube for rotating the same with respect to the said window. 7

2; An electrlcal apparatus comprlsmg a closed container having adielectric medium,

and provided with a window, an X-ray tube entirely submerged within thesaid medium, a transformer and rectifier also submerged Withinthe'saidmedium and connected with the X-ray tube, operating means remote fromthe X-ray tube for rotating the same with respect to the window andindicating means assooiated'with the operating means,

said operating means and indicating means being arranged exteriorly ofthe casing.

3. 'An electrical apparatus comprising a closed container having awindow and provided with a dielectric medium, a rotary X-ray tubeentirely submerged within the said medium and adapted to be adjustedwith relation to the said window, a transformer and a rectifier bothsubmerged within the said medium and connected with the X-ray tube,gearing connected with the X- ray tube for rotating the same and havingan exteriorly arranged operating element remote from the X-ray tube andindicating means exteriorly arranged and associated with the operatingelement.

4. An electrical apparatus comprising a closed container having a windowand provided with a dielectric medium, a rotary X-ray tube entirelysubmerged within the said medium and adapted to be adjusted withrelation to the said window, a transformer and a rectifier bothsubmerged within the said medium and connected with the X-ray tube, apinionrconnected with the X-ray tube, an operating shaft extending to apoint exteriorly of the container and remote from the X-ray tube andhaving a worm meshing with the said pinion, an indicating pointermounted on the shaft exteriorly of the casing, and graduationsassociated with the indicating pointer.

ARION S. KALENBORN.

